长春净月潭地区土壤螨类的调查研究

在长春净月潭地区,通过三年的调查,共获土壤螨类134种或属、4396只,分隶于2目4亚目74科。其中30种为中国新纪录。按个体数多寡,甲螨类>革螨类>辐螨类>粉螨类。四亚目在不同生境中的数量构成,甲螨类、革螨类、粉螨类皆以杂木林和落叶松林为最多,辐螨类在杂木林中大大减少。不同季节四亚目皆以夏季为最多,春秋次之,冬季最少。在六种生境中统计到甲螨类和辐螨类共90种属、3114只,其中优势种2种,常见种25种。土壤螨类在各生境中的种属、数量构成,杂木林>落叶松林>樟子松林>黑松林>草甸>农田。各土壤层中种属、数量构成A_0>A>B层。种属、数量的季节变化夏季>春季>秋季>冬季。各土壤层螨类的数量夏春季A、A_0层多,秋冬季A、B层多。

INVESTIGATION ON SOIL ACARID IN JINGYUETAN AREA CHANGCHUN

From 1984-1986, Northeast Normal University and Bethune Medical University of China have cooperated with Yakohama National University and Matsuyama Shinonome Junior College of Japan in investigating soil acarid in Jingyuetan of Changechan, China. Acarid of 134 species, individual number of which amounts to 4396, have been collected. They belong to 2 orders, 4 suborders and 74 families. Among which, Tareonemus sp. and Ceratozetes mediocris are domi-nont species and 25 species are common ones. The structure of species number and individual number of acarid in various sites have the following characters: Secondey forest >Larix forest >Pinus sylvestris forest >Pinus tabulaeformis forest > grassland > farmland. As regards seasonal fluctuation of species number and individual number of acarid, a significant feature is summer>spring>autumn>winter. Moreover, individual number of vinous vertical layers of soil varies with the changes of season. Usually, the individual numbers acarids in A and A0 layers are more in spring and summer, theose of A and B layers are more in autumn and winter.